. ♪ if you want to be the teacher ♪ >> reporter: do you sense a leer cal pattern here? there is. music was actually jack black's first love. >> my favorites were ozzie osborne and bobby mcfairen. i would have liked to have been a hybrid of those two. >> reporter: you heard you went through a billy joel phase. >> we don't have to talk about that phase, do we? >> reporter: not if you don't want to. >> listen, there's no shame in it. he wrote some tasty jams. >> reporter: jack black grew up in california where his parents were both scientists, aerospace engineers to be exact. were you good at math and science? >> not so much. i don't know what happened because both my parents were... my parents-es were real good at math learning. but i didn't inherit that. >> reporter: his music gene was accompanied by a video game gene. in fact that's what led to his first paying gig. a tv commercial for the game pit ball harry. >> just last night i was lost in jungle with pit ball harry. >> reporter: do you remember your line? >> just last night i was lost in the jungle with pit ball harry. >> rep